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The product forms of tissue paper mainly include paper towels (letter tissues), paper handkerchiefs, paper napkins, etc., which are widely used in restaurants, dining tables, homes and other places and individuals.
What is the quality of tissue paper on the market? In June 2011, the staff of the China Consumers Association randomly purchased 24 brands of products in the major shopping malls, supermarkets and wholesale markets in Beijing as ordinary consumers, including Vida, Qingfeng, Xinxiang, Jieyun, Shujie, Jierou, Mayflower and other brand products with high market share. The sample was commissioned by the National Paper Quality Supervision and Inspection Center for comparative testing. This comparative test was carried out in accordance with GB/T20808 "paper towels (including wet wipes)" standards, and the test items were technical indicators and microbial indicators in the standard. The technical indicators include: quantitative, brightness (whiteness), lateral aspiration height, transverse tensile index, longitudinal wet tensile strength, softness, hole, dust, and internal volume deviation; microbial indicators include: total number of bacterial colonies, The total number of coliform bacteria, pathogenic bacteria and fungal colonies, as well as the convenience of the fluorescent substances, fiber components and paper towels in the tissue papers that consumers are concerned about, the convenience of paper handkerchiefs and the identification of labels, etc. Detection.
Of the 24 samples from this comparative test, 18 of the samples tested in accordance with the quality requirements of their explicit product standards, and there were quality problems with the results of the six samples. The pass rate of this comparative test product was 75.0%. The results of this comparative test show that the quality of the major brand products of tissue paper products on the market is reliable, but the quality of some small brands of tissue paper products still has certain problems.
I. The sanitary paper products are in good sanitary condition. The comparative test is based on the requirements of GB15979 “Sanitary Standards for Disposable Hygienic Productsâ€. The total number of bacterial colonies on paper towels, the total number of fungal colonies, coliforms, pathogenic bacteria (including Pseudomonas aeruginosa, Microbiological indicators such as Staphylococcus aureus and hemolytic streptococcus were tested and all of the 24 samples were qualified.
Second, the brightness (whiteness) index of tissue paper products all meet the standards, but some products contain fluorescent substances. Brightness (whiteness) is one of the appearance indicators of paper. The higher the brightness (whiteness) value, the whiter the paper. The brightness (whiteness) index specified in the paper towel standard is (80.0~90.0)%. The brightness (whiteness) of the 24 paper tissue products selected in this comparison test is 80.8%, and the highest is 89.6%. The results all meet the standard requirements. Six products were found to contain fluorescent substances.
Third, the difference in water absorption performance of different brands of tissue paper products is large. The horizontal suction height is a technical indicator for reflecting the water absorption performance of tissue paper. The larger the lateral aspiration height value, the better the water absorption performance of the tissue paper. The paper towel standard stipulates that the index of the horizontal suction height qualified product is ≥30mm/100s. In this comparison test, the horizontal suction height of the three new paper napkin products of “new cardâ€, “Zhongkang†and “Paijie†is not In accordance with the standard requirements, the minimum test result is only 11mm/100s.
Fourth, some products are not strong enough, the paper dust and paper tissue paper strength indicators include the transverse tensile index and the longitudinal wet tensile strength. The transverse tensile index is one of the strength indexes of the tissue paper, and the larger the transverse tensile index is, indicating that the tissue paper has good strength and is not easily broken when used. The index of the transverse tensile index qualified product in the tissue paper standard is ≥ 1.70 N?m/g. In this comparison test, the horizontal tensile index of the products of “Wei Shiâ€, “Zhongkang†and “Fuerya†did not meet the standard requirements. The minimum test result of Zhongkang products was only 0.74N?m/g. , far below the standard requirements.
Longitudinal wet tensile strength is an indicator of the wet strength of tissue paper. Tissue paper is now used to replace the handkerchief for wiping purposes. It will be in contact with water or sweat when used. If the wet strength is unqualified, the wipes will be covered with paper dust and paper hair, which will affect the use. The minimum requirements for longitudinal wet tensile strength in the tissue paper standard are ≥10.0 N/m. The longitudinal wet tensile strength of the products of the “Fulya†brand in this comparative test did not meet the standard requirements, and the test result was 8.7 N/m.
5. Insufficient quantity of paper loaded in the two products The deviation of the internal quantity refers to the difference between the actual quantity of the product and the quantity marked by the package as a percentage of the quantity marked by the package. The standard stipulates that the deviation of the internal quantity is ≥-2.0%. In this comparison test, three kinds of products are not marked with the number of products and cannot be inspected. The deviation of the internal quantity of “Fuerya†and “Wei Shi†brand products is lower than the standard. According to the requirements, the “Fuerya†brand has an explicit quantity of 200, and the measured value is only 168, and the test result is -16.0%, which is far below the standard requirement.
6. The labeling of paper napkins purchased by the wholesale market is not standardized. This comparison test has carried out inspection on the label of paper towels, including product name, production unit name, address, production date and shelf life or production batch number and limited date, and implementation standards. 5 items such as quality level. In this comparative test, there are three types of paper napkin products whose labeling is not standardized. The “new card†is not marked with quality grade. The products of “Golden Star†and “Zhongkang†are not marked with the production date and shelf life, and are not marked at the same time. Quality level, and standard labeling errors are performed. All three products are purchased in the wholesale market.
Seven, part of the product hole over the standard hole refers to the number of holes ≥ 2mm on the tissue paper, this comparison test "new card" and "Fuerya" two brands of products beyond the standard requirements. Excessive eye holes can affect the performance of tissue paper.
In response to the problems found in the comparative trials, combined with the needs of consumers, the China Consumers Association reminds consumers to pay attention to the following matters when purchasing tissue paper:
First, it is recommended to choose the products of the mainstream brands and the products produced by the enterprises that have passed the ISO9001 quality system certification.
Second, look at the packaging. The name, address, telephone number, etc. of the manufacturer shall be indicated on the product packaging. Also pay attention to whether the name of the product and the standards, product grade, date of manufacture, expiration date, etc. are indicated on the package. It is best to buy products with a close production date.
Third, formal enterprises generally indicate the fiber materials used in the packaging of the products. Tissue paper produced from cotton pulp is of the highest quality, but its output is extremely low and is rarely seen on the market. The products produced by wood pulp generally have good uniformity, fine wrinkles, good hand feeling, no powder, no hair loss, and good wet strength.
Fourth, the production of tissue paper should use wood pulp, bamboo pulp, bagasse pulp, straw pulp and other virgin fibers, and do not use recycled waste paper as raw materials. Generally, the napkin produced by using waste paper as a raw material has low strength, is easy to be shed, and is dusty, and some of them are scattered. This paper has a dull appearance and a large amount of black dust or colored impurities. In order to improve the whiteness, fluorescent whitening agents are generally added to such napkins, and the color of the paper is significantly darkened after being stained with water.
5. Paper towels are not as white as possible. In order to improve the whiteness of the product, some manufacturers add fluorescent whitening agents, which cause the brightness (whiteness) of the tissue paper to exceed 90.0%, which does not meet the requirements of the standard. The surface of such products looks white unnatural and the color tone is not soft. Consumers are best not to buy. Consumers can use the money detector to check whether the tissue paper is added with a fluorescent whitening agent.
Core Tip: Tissue paper is a disposable sanitary paper that is cut and folded after it is made of vegetable fiber as raw material. It is popular among consumers because of its good water absorption, softness, cleanliness and ease of use. .